Scheme 99. peri-Fused Perylenoids Bearing One or Two Boron Atoms.
Reagents and conditions: (a)202 BBr3, 2,4,6-tri-tert-butylpyridine, o-dichlorobenzene, heptane, rt, 24 h; (b) DCM, air, 1 h, then aq. HCl; (c) TipMgBr, o-dichlorobenzene, 48 h.
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